摘要
泥沙淤积严重的水电站增建排沙洞,进水口多采用水下岩塞爆破方案。厚淤泥层的存在对岩塞口爆破会带来不利影响;在排沙洞运行过程中,若渣块进入洞内,也会影响排沙洞的正常运行,成为工程隐患。本文以刘家峡排沙洞岩塞口区及排沙洞为研究对象,采用Euler多相流模型,建立三维排沙洞水沙非恒定多相流计算模型,模拟正常蓄水位、淤泥层不同颗粒组成等条件下,排沙洞水下岩塞爆破后排沙洞中多相流运动过程,为排沙洞水下岩塞爆破方案设计提供参考。
The new construction of sediment tunnel for hydropower station with severe sedimentation always choose the underwater rock plug blasting method for its intake. Heavy silt stratification will bring adverse effect to rock plug blasting. In sediment tunnel operation, if the slag fall into the tunnel,it will affect the normal operation and cause hidden troubles to project.Taking the area around rock plug and sediment tunnel as the research objects, the paper builds the three-dimensional multiphase water-sediment unsteady flow model with Euler multiphase flow, simulates the multiphase flow motion after underwater rock plug blasting under conditions of normal storage high water level or different compositions of particle in silt stratification, which provides reference for scheme design of sediment tunnel underwater rock plug blasting.
出处
《东北水利水电》
2013年第12期3-5,42,共4页
Water Resources & Hydropower of Northeast China
关键词
多相流
非恒定流
水下岩塞爆破
排沙洞
刘家峡
multiphase flow
unsteady flow
underwater rock plug blasting
sediment tunnel
Liujiaxia hydropower station
